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(3) Operations for service processing setting
Operations for each service processing setting is described below.
(a) Operation when "Execute the process as the scan time proceeds." is selected
1) Operation when 10% is set
If no request data for service processing exists, END processing speeds up by the request processing time. (The CPU
module does not wait for requests.)
2) Operation for constant scan setting
The calculation of the service processing time is a calculation of the percentage of the time excluding the
waiting time of the constant scan from the scan time, not a calculation of the percentage of the scan time.
Example
0％
When setting the constant scan, selecting "Execute it while waiting for constant scan setting." can perform the service
processing efficiently. (
6 - 130
Program execution
1ms
END processing
Request 1
Program execution
1ms
END processing
Request 2-1
Program execution
1.2ms
Request 2-2
END processing
Request 3
Figure 6.96 Operation when 10% is set
Operation when 50% is set
50％
END processing
Program execution
Scan time (constant scan setting)
Figure 6.97 Operation for constant scan setting
(3)(d) in this section)
When the time required for processing
one request exceeds 10% of one scan
time, the service processing is suspended
and the request is processed at END
processing in the next scan.
The service processing time depends on the
scan time (program execution time).
100％
Service processing
Service processing time
GX Developer
Waiting time
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